*{margin: 0;padding: 0;}
			.center{margin: 0 auto;width: 80%;padding: 40px 0;}
			.center-title{font-size: 26px;font-weight: bold;line-height: 50px;}
			.pro{line-height: 30px;}
			.big{font-size: 14px;color: #666;}
			.small{font-size: 12px;color: #666;}
			.high{font-size: 22px;color: #ff8900;margin-bottom: 40px;}
			.center-p{color: #666;}
			.span1{color: #ff0000;font-weight: bold;font-size: 14px}
			.span2{font-weight: bold;font-size: 14px;color: black;}